CN102369581B - Flexible cable and transmission system - Google Patents
Flexible cable and transmission system Download PDFInfo
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- CN102369581B CN102369581B CN2010800155411A CN201080015541A CN102369581B CN 102369581 B CN102369581 B CN 102369581B CN 2010800155411 A CN2010800155411 A CN 2010800155411A CN 201080015541 A CN201080015541 A CN 201080015541A CN 102369581 B CN102369581 B CN 102369581B
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- ONDSBJMLAHVLMI-UHFFFAOYSA-N trimethylsilyldiazomethane Chemical compound C[Si](C)(C)[CH-][N+]#N ONDSBJMLAHVLMI-UHFFFAOYSA-N 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/08—Flat or ribbon cables
- H01B7/0838—Parallel wires, sandwiched between two insulating layers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/02—Details
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/0213—Electrical arrangements not otherwise provided for
- H05K1/0216—Reduction of cross-talk, noise or electromagnetic interference
- H05K1/0218—Reduction of cross-talk, noise or electromagnetic interference by printed shielding conductors, ground planes or power plane
- H05K1/0224—Patterned shielding planes, ground planes or power planes
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/0213—Electrical arrangements not otherwise provided for
- H05K1/0237—High frequency adaptations
- H05K1/0248—Skew reduction or using delay lines
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B11/00—Communication cables or conductors
- H01B11/02—Cables with twisted pairs or quads
- H01B11/06—Cables with twisted pairs or quads with means for reducing effects of electromagnetic or electrostatic disturbances, e.g. screens
- H01B11/10—Screens specially adapted for reducing interference from external sources
- H01B11/1091—Screens specially adapted for reducing interference from external sources with screen grounding means, e.g. drain wires
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B7/00—Insulated conductors or cables characterised by their form
- H01B7/08—Flat or ribbon cables
- H01B7/0861—Flat or ribbon cables comprising one or more screens
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/0213—Electrical arrangements not otherwise provided for
- H05K1/0216—Reduction of cross-talk, noise or electromagnetic interference
- H05K1/0218—Reduction of cross-talk, noise or electromagnetic interference by printed shielding conductors, ground planes or power plane
- H05K1/0219—Printed shielding conductors for shielding around or between signal conductors, e.g. coplanar or coaxial printed shielding conductors
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/0213—Electrical arrangements not otherwise provided for
- H05K1/0237—High frequency adaptations
- H05K1/0245—Lay-out of balanced signal pairs, e.g. differential lines or twisted lines
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/03—Use of materials for the substrate
- H05K1/0393—Flexible materials
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/07—Electric details
- H05K2201/0707—Shielding
- H05K2201/0715—Shielding provided by an outer layer of PCB
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/09—Shape and layout
- H05K2201/09209—Shape and layout details of conductors
- H05K2201/09218—Conductive traces
- H05K2201/09236—Parallel layout
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/09—Shape and layout
- H05K2201/09209—Shape and layout details of conductors
- H05K2201/0929—Conductive planes
- H05K2201/093—Layout of power planes, ground planes or power supply conductors, e.g. having special clearance holes therein
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/09—Shape and layout
- H05K2201/09209—Shape and layout details of conductors
- H05K2201/0929—Conductive planes
- H05K2201/09354—Ground conductor along edge of main surface
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
- H05K2201/09—Shape and layout
- H05K2201/09209—Shape and layout details of conductors
- H05K2201/09654—Shape and layout details of conductors covering at least two types of conductors provided for in H05K2201/09218 - H05K2201/095
- H05K2201/09718—Clearance holes
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- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
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- Communication Cables (AREA)
- Structure Of Printed Boards (AREA)
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Abstract
A flexible cable is provided in which a transmission characteristic can be ensured in a high frequency band, and electromagnetic noises can be suppressed. A flexible cable 11 includes a sheet-like base member (dielectric substance) 1; an adhesive (dielectric substance) 2 which bonds the base member 1 to a cover member (dielectric substance) 3; a shield member 4 which covers the cover member 3 and is bonded or printed to the cover member 3 to suppress electromagnetic noises to be radiated; and a top coating member 5 which covers the shield member 4 to protect the shield member 4. The adhesive (2) contains a differential signal wire group (7) including differential signal wires (6) through which differential signals pass and guard ground wires (9a) which prevent the interference of other differential signals; a low-speed signal wire (8) through which low-speed signals pass; a grounding wire (9) used as a ground wire; and a shield grounding wire (10) which controls the electric potential of the shield element (4) so as to be identical to the electric potential of the ground. The differential signal wires (6) are not covered with the shield element (4).
Description
Technical field
The present invention relates to the flexible cable that a kind of its transmission feature and electromagnetic noise feature are considered, and a kind of transmission system.
Background technology
Figure 14 is the cross sectional view of traditional flexible cable.In this manual, make word " flexible cable " expression FPC(flexible print circuit) and the FFC(flexible flat cable) implication.
Flexible cable 36 shown in Figure 14 is the FPC(flexible print circuit).Flexible cable 36 comprises the basal component (dielectric) 1 of flexible sheet; with the adhesive (adhesive) (dielectric) 2 of basal component 1 bonding (bond) to covering member (dielectric) 3; shield member 4; it covers described coating member 3 and bonded or be printed on and be used on coating member 3 suppressing electromagnetic noise by radiation; and Topcoating (coating) member 5, it covers shield member 4 with guard shield member 4.Below being provided in adhesive (dielectric) 2: the differential signal line 6 that differential signal passes through, the low speed signal line 8 that low speed signal passes through is as the earth connection 9 of ground wire and the electromotive force bonding line 10 identical with the electromotive force of ground wire that makes shield member 4.
Here, provide shield member 4 on whole flexible cable 36, in order to effectively suppress electromagnetic noise by radiation (seeing patent document 1).
The prior art file
Patent document
Patent document 1:JP-A-2002-117726
Summary of the invention
The problem to be solved in the present invention
Yet in traditional flexible cable, such problem may occur: the transmission feature that is coated with the holding wire of shield member is significantly worsened at high band.
In addition, although in printed panel etc., capped shield member (such as shielding case etc.) is in order to suppress electromagnetic noise by radiation sometimes for the integral body that comprises the electromagnetic noise source, but shield member and holding wire are separated from one another, thereby the transmission feature of holding wire does not significantly worsen.Yet owing to forming flexible cable in thin slice, so the distance between shield member and holding wire is shorter, thereby there is the deterioration of significant transmission feature in the holding wire that has covered shield member in high band.
The present invention is intended to address the above problem, and the object of the present invention is to provide a kind of flexible cable, it is constructed to: the holding wire of guaranteeing the signal of the transmission feature in high band by needs is uncovered shield member, but the capped shield member of holding wire of the signal by will become electromagnetic noise (such as clock signal etc.) is in order to can satisfy simultaneously the transmission feature guaranteed in high band and inhibition electromagnetic noise by radiation.
In addition, in above flexible cable, at the holding wire that has covered shield member with do not cover between the holding wire of shield member, there is difference in the transmission speed of signal, thereby the moment that signal arrives as the IC of signal receiving unit differs from one another.Therefore, there is the possibility that inaccurately receives signal as the IC of signal receiving unit.Another object of the present invention is to provide a kind of transmission system, it has conditioning signal and arrives unit as the moment of the IC of signal receiving unit, in order to can receive exactly signal as the IC of signal receiving unit.
The method of dealing with problems
Flexible cable of the present invention comprises: sheet dielectric, the first and second wire groups that provide in this sheet dielectric (dielectric substance) and stacked (laminate) sheet shield member on sheet dielectric, make to cover the first wire group and make and do not cover the second wire group, wherein said the first wire group has the differential clock signal line, and described the second wire group has the differential data signals line.
in addition, transmission system of the present invention comprises: the signal transmitting unit that sends differential signal, receive the signal receiving unit of differential signal, and the flexible cable that signal transmitting unit is connected with signal receiving unit, and this flexible cable comprises: sheet dielectric, the the first and second wire groups that provide in sheet dielectric, and be layered in sheet shield member on sheet dielectric, make to cover the first wire group and make and do not cover the second wire group, wherein said the first wire group has the differential clock signal line, and described the second wire group has the differential data signals line.
Advantage of the present invention
In each of flexible cable according to the present invention and transmission system, guarantee the capped shield member of holding wire of the signal of the transmission feature in high band by needs, and the holding wire of the signal by will become the electromagnetic noise source has been capped shield member.Therefore, can guarantee the transmission feature in high band and can suppress the radiation of electromagnetic noise.
Description of drawings
Fig. 1 is the cross sectional view that illustrates according to the flexible cable of first embodiment of the invention.
Fig. 2 is the top view that illustrates according to the flexible cable of first embodiment of the invention.
Fig. 3 is the curve chart that the relation between shield member and transmission feature is shown.
Fig. 4 is the cross sectional view that illustrates according to the flexible cable of second embodiment of the invention.
Fig. 5 is the top view that illustrates according to the flexible cable of second embodiment of the invention
Fig. 6 is the figure that the sequential of clock and data in LVDS is shown.
Fig. 7 is the topology view that illustrates according to the transmission system of second embodiment of the invention.
Fig. 8 be illustrate by according to second embodiment of the invention the figure of waveform of delay of signal.
Fig. 9 is the topology view that impedance network is shown.
Figure 10 is the schematic diagram that the LVDS output unit of IC in signal transmitting unit is shown.
Figure 11 is the figure that the sequential of displacement is shown.
Figure 12 is the topology view that PLL is shown.
Figure 13 is the topology view that VCO.
Figure 14 is the cross sectional view that traditional flexible cable is shown.
Embodiment
Hereinafter with reference to accompanying drawing, flexible cable according to an embodiment of the invention is described.
The first embodiment
When schematically showing cross sectional view and schematically show top view in Fig. 1 in Fig. 2, flexible cable according to an embodiment of the invention is described.
In Fig. 1, as the FPC(flexible print circuit) flexible cable 11 comprise: the sheet form base member (dielectric) 1 of being made by flexible material; Basal component 1 is adhered to the adhesive (dielectric) 2 of covering member (dielectric) 3; Shield member 4, it covers described coating member 3 and bonded or be printed onto coating member 3, to suppress electromagnetic noise by radiation; And Topcoating member 5, it covers shield member 4 with guard shield member 4.
In addition, flexible cable 11 has: differential signal line group 7 comprises the differential signal line 6 that differential signal passes through and prevents protective earthing line 9a from the interference of other differential signals; The low speed signal line 8 that low speed signal passes through; Earth connection 9 as ground wire; And bonding line 10, it is adapted to be the electromotive force that makes shield member 4 can be identical with the electromotive force of ground wire, and these all are provided in adhesive 2.
The feature of the flexible cable 11 with above structure is described with reference to Fig. 3.
At first, in the present embodiment, the not capped shield member 4 of differential signal line 6.This be because the transmission feature of the wiring of flexible cable 11 along with the existence of shield member 4 or do not exist and change significantly.
Fig. 3 is schematically illustrated does not have the transmission feature 12 of wiring of shield member and the transmission feature 13 with wiring of shield member.
Compare with the transmission feature 12 of the wiring that there is no shield member, the transmission feature 13 with wiring of shield member worsens significantly at high band.
This is because shield member and the distance between holding wire used in flexible cable are short, and low as the validity of the shield member of ground wire.
In using the conventional transmission system of flexible cable, because the frequency range that will be transmitted is lower frequency range (for example, SD picture data (SD data)), so even the work of transmission system is also no problem when transmission feature worsens.
Yet in the present embodiment, the frequency range that be transmitted is higher frequency range (for example, high definition picture data (HD data)).Therefore, when transmission feature worsens, the distortion of the shape of the signal of transmission, so transmission system inaccurately operates.
Therefore, the flexible cable of the present embodiment is constructed to make differential signal line group 7 to be uncovered shield member 4.Therefore, even differential signal line group 7 also can be guaranteed enough transmission features in the high band of the signal by holding wire.
In addition, be constructed to cover shield member 4 as the low speed signal line 8 that is not included in other holding wires in differential signal line group 7, power line or earth connection 9.This is because the signal that passes through low speed signal line 8 that uses in low-speed communication (such as I2C), be used for the signal of control or may become the electromagnetic noise source to the power supply that IC provides.Use this structure, can suppress electromagnetic noise by radiation.
Therefore, according to the flexible cable 11 according to the first embodiment of the present invention, flexible cable 11 is constructed to make the not capped shield member 4 of differential signal line group 7, and holding wire in addition to the above (such as low speed signal line 8 etc.) be capped shield member 4, make and satisfy simultaneously the transmission feature of guaranteeing in high band and suppress electromagnetic noise by radiation.
Simultaneously; about the wiring in flexible cable 11; outside outside the circuit with the number shown in accompanying drawing; differential signal line or protective earthing line also are provided on the zone that does not cover shield member 4, and also provide low speed signal line, power line, earth connection etc. on the zone that has been capped shield member 4.Yet, in above description, do not represent this structure in figure, and only represented that conduct is to advantage of the present invention, relevant with the distribution of circuit thing.Can comprise protective earthing line 9a in differential signal line group 7.
The second embodiment
Below, when schematically showing cross sectional view and schematically show top view in Fig. 4 in Fig. 5, according to a second embodiment of the present invention flexible cable is described.
In Fig. 4, the covering of flexible cable 14 kind of shield member 4 and each holding wire of coated component 5 from different according to the flexible cable of the first embodiment.
In the first embodiment, whole differential signal line 7 is not capped shield member 4 and Topcoating 5 all.With above opposite; in the present embodiment; differential signal line group 7 is divided into the differential clock signal line 6b that differential data signals line 6a that data-signal passes through and clock signal are passed through, and the capped shield member 4 of circuit and Topcoating member 5 except the differential signal line group 7a that comprises differential data signals line 6a that data-signal passes through and protective earthing line 9a.
The feature of the flexible cable 14 with above structure is described referring to Fig. 6.
Use the LVDS(low-voltage differential signal by supposition) be described as the transmission method of the flexible cable 14 of the present embodiment.
Owing to having same waveform as and being offset each other differential data signals line 6a that the signal of the phase places of 180 degree passes through by data-signal and differential clock signal line 6b that clock signal is passed through, so two holding wires are arranged adjacent to each other.
In addition, as shown in Figure 6, LVDS is seven data-signals 16 of transmission in the one-period of clock signal 15 for example.Therefore, in the situation that clock signal is set as for example 75MHz, each data-signal maximum becomes the maximum 262.5MHz of 525Mbps(), thus compare with clock signal, and data-signal becomes high speed signal.
In addition, because the signal that periodically repeats height (High) and low (Low) state becomes the electromagnetic noise source, so clock signal becomes the signal in electromagnetic noise source.
Therefore, be configured to be uncovered shield member 4 by the differential data signals line 6a that data-signal is passed through, can guarantee enough transmission features in high band, and be configured to capped shield member 4 by the differential clock signal line 6b that clock signal is passed through, can more effectively suppress electromagnetic noise by radiation.
Therefore, according to according to the flexible cable 14 of second embodiment of the invention, the differential data signals line 6a that the capped shield member 4 of differential clock signal line 6b that flexible cable 14 is constructed to make clock signal pass through and data-signal pass through is uncovered shield member 4.Therefore, can satisfy simultaneously and effectively suppress electromagnetic noise by radiation and guarantee enough transmission features in high band.
Simultaneously; about the wiring in the flexible cable 14 of the present embodiment; have outside the circuit of number shown in the drawings; also provide differential signal line or protective earthing line on the zone that is not capped shield member 4, and also provide low speed signal line, power line, earth connection etc. on the zone that has covered shield member 4.Yet, in the above description, do not represent this structure in figure, and only represented as advantage of the present invention, relevant with circuit assignment thing.Can comprise protective earthing line 9a in differential signal line group 7.
Simultaneously, based on having by carry out the example of the structure of transmission as transmission method with LVDS, carried out the description according to the flexible cable 14 of the present embodiment.Yet, in addition, can similarly implement to carry out by difference transmission methods such as miniLVDS, BusLVDS, RSDS, TMSD the structure of transmission.
Below, the transmission system with sequential regulon is described with reference to Fig. 7.
In Fig. 7, transmission system 24 comprises: transmitter side printed panel 23a, and it has IC 18, the impedance network 20 as regulon, differential signal line 22a and connector 17a as signal transmitting unit; And receiver side printed panel 23b, it has connector 17b, differential signal line 22b, impedance network 20, terminal (terminating) resistance 21 and as the IC 19 of signal receiving unit.Transmission system 24 is constructed to make uses flexible cable 14 with transmitter side printed panel 23a and receiver side printed panel 23b be coupled to each other (couple).
In the situation that use according to flexible cable 14 of the present invention, the generation transmission speed is poor between the differential data signals line 6a of the not capped shield member 4 that the differential clock signal line 6b that has been capped shield member 4 and data-signal that clock signal is passed through pass through.Therefore, as shown in Figure 8, the sequential relationship of clock signal 15 and data-signal 16 is before by flexible cable 14 and change afterwards.
This is because compare with the data-signal 16 of holding wire by not capped shield member 4, and impedance increase and the transmission speed of the clock signal 15 of the holding wire by being capped shield member 4 reduce, thereby retardation increases.Below describe term and regulate three unit of sequential relationship.
First module is constructed to make impedance network 20 to be connected with differential signal line 22, and impedance network 20 is adapted to be execution arrival as the adjusting of the sequential of the signal of the IC 19 of signal receiving unit.
As shown in Figure 9, in this unit, just before as the IC 18 of signal transmitting unit or as the part place after the IC 19 of signal receiving unit, impedance device 27 is connected with each differential signal line 22 with the serial or parallel connection form.Therefore, when the impedance that changes every circuit and when regulating transmission speed, the sequential of each signal is conditioned.
In this embodiment, compare with the retardation of data-signal 16, the retardation of clock signal 15 increases.Therefore the differential signal line 6a that, the resistance in impedance device 27(the present embodiment) passes through to be connected in series respectively data-signal 16 makes the sequential of each data-signal 16 be delayed the poor of retardation between clock signal 15 and data-signal 16.
Simultaneously, in the description of the present embodiment, impedance network refers to resistance.Yet, can replace resistance with another device that comprises impedance component.
Second unit is adapted to be to be regulated from export the sequential of each signal as the IC 18 of signal transmitting unit.
Figure 10 schematically shows the output unit as the LVDS of the IC 18 of signal transmitting unit.By parallel-to-series converter 28, data-signal 16 is transformed into serial signal so that output from parallel signal, and via the PLL(phase-locked loop) 30 and frequency divider (divider) 29 clock signals 15.
During by parallel-to-series converter 28 conversion, data-signal 16 is shifted the degree of the difference of the retardation between (bit-shift) clock signal 15 and data-signal 16 when data-signal.Therefore, can come output signal by the sequential of shifted signal in advance, data-signal 32 after the data-signal 31 before displacement as shown in figure 11 and displacement.
Then, PLL is described below.As shown in figure 12, PLL 30 is constructed to have the oscillator 33 as benchmark, two frequency dividers 29, phase comparator 34 and VCO(voltage controlled oscillators) 35.
As shown in figure 13, VCO 35 is constructed to have some inverters.Signal by reverser has short delay between input unit and output unit.
Utilize to postpone and select retardation to come clock signal, making and to come clock signal by the sequential of delay clock signals in advance.
In the present embodiment, because compare with the retardation of data-signal 16, the retardation of clock signal 15 increases, thus carry out the degree of the retardation that is displaced to increase, in order to regulate from the sequential as IC 18 outputting data signals of signal transmitting unit.In addition, by regulating with VCO 35 from the sequential as IC 18 clock signals of signal transmitting unit.Therefore, from being conditioned as IC 18 clock signals 15 of signal transmitting unit and the sequential of data-signal 16.
Although described in the present embodiment by combinatorial shifting and VCO 35 and regulated the unit of sequential, can only regulate sequential by displacement or VCO 35.
Simultaneously, can replace the VCO 35 that forms by making up a plurality of inverters with another buffer.
Unit the 3rd is adapted to be according to connecting as the IC 18 of signal transmitting unit and arrives sequential as the IC 19 of signal receiving unit with come conditioning signal as the length of the holding wire of the IC 19 of signal receiving unit.
The contraction in length of holding wire that can be by having large retardation, the length with holding wire of little retardation extends, and perhaps shortens and extends both and regulate sequential.
Namely, the length that has the holding wire of large retardation by shortening, extend the length of the holding wire with little retardation, perhaps shorten the length of the holding wire with large retardation and the length of the holding wire that prolongation has little retardation, can regulate each signal arrival as the time of advent of the IC 19 of signal receiving unit.Therefore, can regulate the sequential of each signal.
Have the one or more transmission system 24 in three unit regulating respectively sequential by use, the IC 19 of signal receiving unit can receive each signal exactly.
Although abovely be described about the example of regulating the timing off-set that causes due to flexible cable 14, the present invention also is applicable to the timing off-set that causes due to the IC as signal transmitting unit except flexible cable 14, as the IC of signal receiving unit, circuit, connector etc. on plate.
Although by having specifically described the present invention with reference to specific embodiment, those skilled in the art will understand in the situation that do not deviate from the spirit and scope of the present invention can carry out various modifications and change.
The present invention is based on the Japanese patent application (JP-2009-080964) of submitting on March 30th, 2009, by reference its content is herein incorporated.
Industrial applicibility
Therefore, flexible cable according to the present invention makes and can satisfy simultaneously enough transmission features of guaranteeing in high band and suppress electromagnetic noise by radiation, and the present invention is useful for transmission and the transmission system of the flexible cable that uses wherein transmission feature and electromagnetic noise feature to be considered.
Description of reference numerals
Claims (6)
1. flexible cable comprises:
Sheet dielectric;
The first and second wire groups, it is provided in described sheet dielectric, and
The sheet shield member, it is laminated on described sheet dielectric, in order to cover described the first wire group and do not cover described the second wire group;
Wherein said the first wire group has the differential clock signal line, and described the second wire group has the differential data signals line.
2. flexible cable as claimed in claim 1, wherein said the second wire group has differential signal line.
3. transmission system comprises:
Signal transmitting unit sends differential signal;
Signal receiving unit receives differential signal; And
Flexible cable is connected to described signal receiving unit with described signal transmitting unit,
Wherein said flexible cable comprises:
Sheet dielectric;
The first and second wire groups, it is provided in described sheet dielectric; And
The sheet shield member, it is laminated on described sheet dielectric, in order to cover described the first wire group and do not cover described the second wire group,
Wherein said the first wire group has the differential clock signal line, and described the second wire group has the differential data signals line.
4. transmission system as claimed in claim 3, wherein said the second wire group has differential signal line.
5. transmission system as claimed in claim 3, wherein said signal transmitting unit or described signal receiving unit have the sequential regulon, described sequential regulon postpones described differential data signals by connected resistance, in order to regulate the sequential of described differential data signals and described differential clock signal.
6. transmission system as claimed in claim 3, wherein said signal transmitting unit has the sequential regulon, and the bit of the described differential data signals of described sequential regulon displacement is in order to regulate the sequential of described differential data signals and described differential clock signal.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
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| JP2009080964 | 2009-03-30 | ||
| JP2009-080964 | 2009-03-30 | ||
| PCT/JP2010/002318 WO2010116684A1 (en) | 2009-03-30 | 2010-03-30 | Flexible cable and transmission system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102369581A CN102369581A (en) | 2012-03-07 |
| CN102369581B true CN102369581B (en) | 2013-06-12 |
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| CN2010800155411A Active CN102369581B (en) | 2009-03-30 | 2010-03-30 | Flexible cable and transmission system |
Country Status (5)
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| US (1) | US8669483B2 (en) |
| EP (1) | EP2402959B1 (en) |
| JP (1) | JP5409776B2 (en) |
| CN (1) | CN102369581B (en) |
| WO (1) | WO2010116684A1 (en) |
Families Citing this family (26)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011258433A (en) * | 2010-06-10 | 2011-12-22 | Sumitomo Electric Ind Ltd | Method of manufacturing shield flat cable, and shield tape used for the manufacturing method |
| CN103477505A (en) * | 2011-01-05 | 2013-12-25 | 汤姆逊许可公司 | Electronic device with PCBs interconnected by a flex circuit with controlled impedance |
| US9269653B2 (en) * | 2012-06-27 | 2016-02-23 | Mediatek Inc. | SGS or GSGSG pattern for signal transmitting channel, and PCB assembly, chip package using such SGS or GSGSG pattern |
| US10426035B2 (en) | 2012-06-27 | 2019-09-24 | Mediatek Inc. | SGS or GSGSG pattern for signal transmitting channel, and PCB assembly, chip package using such SGS or GSGSG pattern |
| JP6074946B2 (en) * | 2012-08-22 | 2017-02-08 | ブラザー工業株式会社 | Image recording device |
| JP6146998B2 (en) * | 2012-12-21 | 2017-06-14 | キヤノン株式会社 | Electronics |
| US20140268538A1 (en) * | 2013-03-13 | 2014-09-18 | Silicon Graphics International Corp. | Jbod cable |
| WO2014186966A1 (en) * | 2013-05-23 | 2014-11-27 | 华为技术有限公司 | Circuit board and method for forming circuit on pcb |
| TWI557752B (en) | 2015-02-25 | 2016-11-11 | 緯創資通股份有限公司 | Cable structure |
| JP2017059517A (en) * | 2015-02-27 | 2017-03-23 | セイコーエプソン株式会社 | Electronic apparatus, and printer |
| US9530540B1 (en) * | 2015-07-14 | 2016-12-27 | Component User Industry Co., Ltd. | SATA cable |
| CN105555016B (en) * | 2015-12-29 | 2018-07-06 | 广东欧珀移动通信有限公司 | Mobile terminal, flexible PCB and its manufacturing method |
| CN105657958B (en) * | 2015-12-29 | 2018-09-04 | 广东欧珀移动通信有限公司 | Mobile terminal, flexible PCB and its manufacturing method |
| TWI614768B (en) * | 2016-11-02 | 2018-02-11 | 和碩聯合科技股份有限公司 | Data transmission line and data transmission device |
| TWI683613B (en) * | 2017-02-10 | 2020-01-21 | 華碩電腦股份有限公司 | Circuit layout structure |
| US10696078B2 (en) | 2017-09-11 | 2020-06-30 | Apple Inc. | Space-efficient flex cable with improved signal integrity for a portable electronic device |
| TWM555550U (en) * | 2017-09-29 | 2018-02-11 | Bellwether Electronic Corp | Long and straight high-frequency transmission cable |
| CN108109740A (en) * | 2017-12-16 | 2018-06-01 | 亳州联滔电子有限公司 | flat cable and its manufacturing method |
| JP7208739B2 (en) * | 2018-08-10 | 2023-01-19 | 株式会社ジャパンディスプレイ | Display device and wiring board |
| US10951053B2 (en) | 2018-09-10 | 2021-03-16 | Apple Inc. | Portable electronic device |
| JP6942679B2 (en) | 2018-09-21 | 2021-09-29 | キヤノン株式会社 | Transmission circuits, electronic devices, and imaging devices |
| KR20210009972A (en) * | 2019-07-18 | 2021-01-27 | 삼성전자주식회사 | Flexible cable |
| CN112566353A (en) * | 2019-09-26 | 2021-03-26 | 中兴通讯股份有限公司 | Circuit board and communication equipment |
| WO2021180876A1 (en) * | 2020-03-11 | 2021-09-16 | Schleifring Gmbh | Stripline connections |
| TWI727838B (en) * | 2020-06-24 | 2021-05-11 | 貝爾威勒電子股份有限公司 | Cable structure |
| CN117977301A (en) * | 2022-10-25 | 2024-05-03 | 华为技术有限公司 | Layout scheme of data transmission wiring, main board and electronic equipment |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3564053B2 (en) * | 2000-10-06 | 2004-09-08 | キヤノン株式会社 | Flexible cable |
| CN1560877A (en) * | 2004-03-11 | 2005-01-05 | 禾昌兴业股份有限公司 | Characteristic impedance 85-115 omega flexible line structure |
| CN1722311A (en) * | 2004-08-13 | 2006-01-18 | 达昌电子科技(苏州)有限公司 | Flat wire structure |
| CN2922071Y (en) * | 2006-01-07 | 2007-07-11 | 达昌电子科技(苏州)有限公司 | Flexible soft creel |
| CN201017706Y (en) * | 2007-03-28 | 2008-02-06 | 鸿富资讯股份有限公司 | Bus cable coating structure capable of producing different electric impedance |
| TWM327527U (en) * | 2007-08-28 | 2008-02-21 | Wen Te Electronics Co Ltd | Improved structure for flexible flat cable |
| TWM352752U (en) * | 2008-09-12 | 2009-03-11 | P Two Ind Inc | Flexible bus cable |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0529739A (en) * | 1991-07-19 | 1993-02-05 | Tatsuta Electric Wire & Cable Co Ltd | Flexible printed circuit board |
| JP3424958B2 (en) * | 1993-01-26 | 2003-07-07 | 住友電気工業株式会社 | Shielded flat cable and manufacturing method thereof |
| JP3672056B2 (en) * | 1995-08-18 | 2005-07-13 | 松下電器産業株式会社 | Timing signal generation circuit |
| JP4876335B2 (en) * | 2001-06-08 | 2012-02-15 | 大日本印刷株式会社 | Flat cable covering material and flat cable using the same |
| JP2005302315A (en) * | 2004-04-06 | 2005-10-27 | Kyocera Mita Corp | Flat cable |
| JP4526115B2 (en) * | 2004-05-24 | 2010-08-18 | ソニーケミカル＆インフォメーションデバイス株式会社 | Flexible flat cable |
| JP4207998B2 (en) | 2006-08-07 | 2009-01-14 | ソニー株式会社 | Flat cable device |
| KR100843220B1 (en) * | 2006-12-19 | 2008-07-02 | 삼성전자주식회사 | Print circuit board achieving a coplanar LC balance |
| CN101370351B (en) * | 2007-08-17 | 2012-05-30 | 鸿富锦精密工业（深圳）有限公司 | Flexible circuit board |
| JP2009080964A (en) | 2007-09-25 | 2009-04-16 | Toshiba Corp | Fuel cell |
| TWM342597U (en) * | 2008-05-08 | 2008-10-11 | Tennrich Int Corp | Easily flexible transmission line with improved characteristic impedance |
| US8110744B2 (en) * | 2008-08-19 | 2012-02-07 | Apple Inc. | Flexible shielded cable |
| JP2011204503A (en) * | 2010-03-26 | 2011-10-13 | Hitachi Cable Fine Tech Ltd | Flexible flat cable |
-
2010
- 2010-03-30 WO PCT/JP2010/002318 patent/WO2010116684A1/en active Application Filing
- 2010-03-30 CN CN2010800155411A patent/CN102369581B/en active Active
- 2010-03-30 JP JP2011508232A patent/JP5409776B2/en active Active
- 2010-03-30 EP EP10761390.3A patent/EP2402959B1/en active Active
- 2010-03-30 US US13/260,816 patent/US8669483B2/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3564053B2 (en) * | 2000-10-06 | 2004-09-08 | キヤノン株式会社 | Flexible cable |
| CN1560877A (en) * | 2004-03-11 | 2005-01-05 | 禾昌兴业股份有限公司 | Characteristic impedance 85-115 omega flexible line structure |
| CN1722311A (en) * | 2004-08-13 | 2006-01-18 | 达昌电子科技(苏州)有限公司 | Flat wire structure |
| CN2922071Y (en) * | 2006-01-07 | 2007-07-11 | 达昌电子科技(苏州)有限公司 | Flexible soft creel |
| CN201017706Y (en) * | 2007-03-28 | 2008-02-06 | 鸿富资讯股份有限公司 | Bus cable coating structure capable of producing different electric impedance |
| TWM327527U (en) * | 2007-08-28 | 2008-02-21 | Wen Te Electronics Co Ltd | Improved structure for flexible flat cable |
| TWM352752U (en) * | 2008-09-12 | 2009-03-11 | P Two Ind Inc | Flexible bus cable |
Also Published As
| Publication number | Publication date |
|---|---|
| EP2402959A1 (en) | 2012-01-04 |
| CN102369581A (en) | 2012-03-07 |
| WO2010116684A1 (en) | 2010-10-14 |
| US8669483B2 (en) | 2014-03-11 |
| JP5409776B2 (en) | 2014-02-05 |
| EP2402959B1 (en) | 2021-12-01 |
| JPWO2010116684A1 (en) | 2012-10-18 |
| EP2402959A4 (en) | 2017-09-13 |
| US20120020416A1 (en) | 2012-01-26 |
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